97. The circular conductor circuit radius r = 5 cm and a current of I = 1 A is in the magnetic field and the plane perpendicular to the direction of the field circuit. The field strength is equal to 10 kA / m. Determine the work to be performed in order to rotate the loop 90 ° around an axis coinciding with the diameter of the contour.

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)